To promote better relations with Latin America through his "Alliance For Progress," President and Mrs. Kennedy visited Puerto Rico, Mexico, Venezuela and Colombia. Starting at Puerto Rico,on December 15, 1961, a sign is seen bearing the President's image and reading 'Welcome" in Spanich. Next in a motorcade through a crowded street, a man stands in an open car throwing confetti, while President John F. Kennedy (JFK) follows in another open car, accompanied by Governor Munoz Marin of Puerto Rico. In change of scene (and country) on December 16th, JFK stands at a microphone in Venezuela, next to an interpreter making notes. He introduces his wife, as a Kennedy who doesn't need an interpreter, and asks her to say a few words. Mrs. Jacqueline Kennedy leaves her seat next to President Romulo Betancourt, and steps to the microphone, where she briefly addresses the gathering in Spanish. (Mrs. Betancourt occupies the seat next to JFK's empty one.) After Mrs. Kennedy's brief remarks, those in the gathering applaud, and President Kennedy appears delighted.

Large crew of Hurricane Hunters board a WC-121N Lockheed Super Constellation of Airborne Early Warning Squadron FOUR (VW-4). The aircraft takes off flying directly over the camera at U.S. Naval Station, Roosevelt Roads, Puerto Rico. Aerial view of the WC-121N in flight. Aerial view of storm clouds. A dropsonde being launched from the aircraft. View of cabin interior with crew members at their stations. Radio operator keying message. A sailor annotating a weather map with latest data. The USS Willis A. Lee (DL-4), reversing course due to weather warning. Two F9F-8 aircraft deploying to avoid storm. Commercial store fronts at shore boarded up for protection. Women and a boy boarding up their home in Puerto Rico for a 1960 (likely) or 1961 (possibly) hurricane storm. Men placing ropes across their roof to lash it down against wind. Water and wind driving across a city street. Several cars driving through heavy winds and rain. Trees bending in hurricane winds. Coastal flooding occuring. Pilot and copilot in cockpit of WC-121N Hurricane Hunter aircraft. Crew coping with turbulence back in the cabin. The VW-4 Logo.

Officials dressed in white business suits, march, flanked by American flags,in a parade for the National Youth Administration, past the Captiol Building in San Juan, Puerto Rico. They are followed by youth in black overalls, shouldering spades. Behind them march girls, carrying a banner reading: "NYA, Caguas Proyecto." A truck comes next, displaying a large poster in its rear reading: "NYA for Puerto Rico, Puerto Rico Leads the way," amd listing various NYA youth projects in Puerto Rico. Youth carrying N.Y.A. banners and American flags come next, followed by more young men carrying spades. Youthful firemen stand beside reels of hoses and a sign reading: "Bomberos de Guayama." An official pins a badge on the lapel of a man being honored. Next, a fireman, and two youth demonstrate by spraying water from their hose along the street. Remainder of the film is a montage of views. Scene shifts to the harbor, where two U.S. Clemson class destroyers are seen. Then boys are seen playing on a beach. A closeup of a young woman. Closeups of several of the youthful firemen previously seen. Several youth with spades, seen from the rear. An American flag wafting in a breeze.

Aviator Charles Lindbergh visits San Juan, Puerto Rico. A huge crowd awaits his arrival at an air field. Lindbergh's plane 'Spirit of Saint Louis' lands and taxis. Men move towards the plane as it comes to a halt. Closeup of the 'Spirit of Saint Louis'. Several officials stand near the airplane as Lindbergh prepares to leave the cockpit. Among them is George H. Estes, Jr., Commander of U.S. Troops in Puerto Rico. ( He held rank of Brigadier General, in 1918, but now wears peacetime rank insignia of Colonel.) Others greeting Lindbergh include Puerto Rican government officials and civilians, who watch as Lindbergh climbs out of the cockpit. Lindbergh poses with Governor of Puerto Rico, Horace M Towner, and other officials.

WC-121N Lockheed Super Constellation of Airborne Early Warning Squadron FOUR (VW-4) in flight over the Miami International Airport. VW-4 aircreww walk across a ramp where several WC-121N Aircraft are parked. View of a WC-121N aircraft in flight. View from outside the cockpit window of Pilot, copilot and flight engineer at their respective stations. The radio operator transmitting a message by key. A sailor marking data on a chart back in the Aviation Building in Miami, Florida. a sailor transmitting the information over a teletype machine. Office of the Commanding Officer of VW-4. Their logo on the office sign, containing hurricane warning signal (two gale force flags), a lightning bolt, an eye, and gold wings, plus the words: "Hurricane Hunters." Teletype message being received calling for a mission to make low level investigation of possible tropical depression at 700 millibar level (about 10 thousand foot altitude). VW-4 crew in the U.S. Naval Station, Roosevelt Roads, Puerto Rico, planning the mission over a weather chart.

Inauguration of Luis Munoz Marin as first elected Governor of Puerto Rico. Large celebration with parade of U.S. troops and Puerto Rican National Guard. View of the Puerto Rican Capitol Building. American and Puerto Rican flags. Governor Luis Munoz Marin reviews parade. He takes the oath of office, administered by Chief Justice of the Puerto Rican Supreme Court, Angel de Jesus. Standing behind the Governor, is U.S. Senator, Henry Cabot Lodge, who has his hand on the Governor's back, and congratulates him. The Governor speaks over microphone. Decorated floats pass by during the parade. Children cheer. Huge crowd gathered to watch the parade and cheer. Aerial view of the Puerto Rican Capitol Building.